NAME

       revnetgroup - generate reverse netgroup data

SYNOPSIS

       /usr/lib/yp/revnetgroup [-u | -h]

DESCRIPTION

       Revnetgroup processes the standard input in netgroup(5) format into what is called reverse
       netgroup form. That is, where the original file shows netgroup memberships in terms of
       which members reside in a particular group, the reverse netgroup format specifies what
       groups are associated with a particular member. This information is used to generate the
       netgroup.byuser and netgroup.byhosts NIS maps. These reverse netgroup maps are used to
       help speed up netgroup lookups, particularly for the innetgr() library function.

       The revnetgroup command prints its results on the standard output. It is usually called
       only by /var/yp/Makefile when rebuilding the NIS netgroup maps.

OPTIONS

       -u
           Generate netgroup.byuser output; only username information in the original netgroup
           file is processed.

       -h
           Generate netgroup.byhost output; only hostname information in the original netgroup
           file is processed.

FILES

       /var/yp/Makefile
           The Makefile to build the NIS databases.

       /etc/netgroup
           The default netgroup database file. This file is most often found only on the NIS
           master server.

SEE ALSO

       getnetgrent(3), netgroup(5),

AUTHOR

       revnetgroup was written by Thorsten Kukuk <kukuk@linux-nis.org>.